Computation Reduction Oriented Circular Scanning SAR Raw Data Simulation on Multi-GPUs

Computation Reduction Oriented Circular Scanning SAR Raw Data Simulation on Multi-GPUs

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As a special working mode, the circular scanning Synthetic Aperture Radar (SAR) is widely used in the earth observation.With the increase of resolution and swath width, 36x12x24 wall cabinet the simulation data has a massive increase, which boosts the new requirements of efficiency.Through analyzing the redundancy in the raw data simulation based on Graphics Processing Unit (GPU), a fast simulation method considering reduction of redundant computation is realized by the multi-GPUs and Message Passing Interface (MPI).The results show that the efficiency of 4-GPUs increases 2 times through the redundant reduction, and the hardware cost decreases by 50%, thus the overall anti social social club neon sign speedup achieves 350 times than the traditional CPU simulation.